Computer Literacy Lecture 4: UNIX Commands

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Computer Literacy Lecture 4 UNIX Commands
UEC Academic Skills I

• International Student Center
• The University of Electro-Communications
• Tokyo Japan
• 2005

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Objectives.

• Learn to use Unix OS efficiently
• Create multiple windows and do multiple tasks
  simultaneously
• Transfer multiple files at once rather than one
  by one
• Improve the security by using secured shell (ssh
  command)
• Improve the article writing skills
• Learn to use the network printer

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Creating an extra window.
Command xterm
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Task 1 Create files in IPC and transfer to hawk

• Create files
• IPC date gt IPC_ftp_2.txt
• IPC who gt IPC_ftp_3.txt

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Task 1 Create files in IPC and transfer to hawk

• Check the contents of each file.
• IPC less IPC_ftp_2.txt
• IPC less IPC_ftp_3.txt

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Task 1 Create files in IPC and transfer to hawk

• Put created files (.txt) into hawk using mput
• ipc ftp hawk.fedu.uec.ac.jp
• (enter user name and password)
• ftpgt mput .txt
• ftpgt by (or quit)

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Put created files (.txt) into hawk using mput
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Task 1 Cont.

• Check if the files were successfully transferred
• ssh to hawk
• ipc ssh l user_id hawk.fedu.uec.ac.jp
• hawk ls al
• Check the content of the transferred files
• hawk less IPC_ftp_2.txt
• hawk less IPC_ftp_3.txt

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Task 2- Create files in hawk and transfer them to
IPC using mget

• ssh to hawk, create two files and logout from
  it
• ftp to hawk and get those two files using mget
  command.
• Note Follow steps similar to Task 1

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Secure Shell Commands

• Login to a remote server ssh -l user_id
  host_name
• hawk ssh l suzuki hotel-1.edu.cc.uec.ac.jp

Commands to transfer files to the remote
server (similar to put in ftp) scp
file_name user_id_at_host_name from the remote
server (similar to get in ftp) scp
user_id_at_host_namefile_name new_file_name
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Secure Shell Commands

• Important
• To access IPC servers (hotel-1,2,35,and
  golf-1,2,35) from another system different to
  IPC system (like hawk), you should use the
  following hostname pattern(It is possible to
  use any of the above server names at IPC instead
  of hotel-1 below)
•  hotel-1.edu.cc.uec.ac.jp

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• Task 3
• Copy file IPC_ftp_2.txt with name changed to
  IPC_ftp_2_new.txt (in hawk) and transfer it to
  IPC using scp
• hawk cp IPC_ftp_2.txt IPC_ftp_2_new.txt
• hawk scp IPC_ftp_2_new.txt user_id_at_host_name

• Task 4
• Transfer the file IPC_ftp_3.txt, from IPC to
  hawk, with the name changed to IPC_ftp_3_new.txt
  using scp.
• hawk scp user_id_at_host_name IPC_ftp_3.txt IPC
  _ftp_3_new.txt

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Task 5 Write two articles about Your first
impression of UEC and Your first impression of
Japan

• Count the number of words in the article use
• wc file_name

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Print the Content of a File

• Commands
• ipc lpr Pname_of_the_printer file_name
• This will print the file to the desired printer.
• Ex printing a file using the printer at the IPC
  room 2
• ipc lpr Plp2a file_name
• ipc lpr Plp2b file_name
• ipc lpq Pname_of_the_printer
• This will show the list of jobs in the queue for
  the printer including the job numbers and size of
  the files.
• Ex ipc lpq Plp2a

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Print the Content of a File

• ipc lprm Pname_of_the_printer job_number
• This will remove the indicated pending job from
  the queue of a particular printer.

• Task 6
• Submit the hard copies of the 2 articles Your
  first impression of UEC and Your first
  impression of Japan.